CONTRIBUTOR(S): Emma Chandley, Andrea Tarr,
Medication: Flumethrin
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Your dog has been prescribed flumethrin for the treatment and prevention of external parasites such as fleas and ticks. This medication is commonly used in collars also containing imidacloprid, which have a long duration of effect.
ℹ️Key points:
- A continuously-worn collar is effective for up to 8 months against fleas and ticks.
- Provides repellent (anti-feeding) activity against ticks.
- Reduces the risk of transmission of certain diseases caused by ectoparasites.
- Safe for puppies over 7 weeks of age.
- Pets wearing the collar should not be allowed to sleep in the same bed as their owners, especially children.
- Wash hands with cold water after fitting the collar.
ℹ️This information sheet is designed to help answer commonly asked questions and help you give the medication safely and effectively to your pet. It does not contain all available information for this medication. If you have other questions or need more information, contact your veterinarian or pharmacist.
⚠️Always follow the dosing instructions provided by your veterinarian.
Name, Brand Names, Class of Medication, and Storage
Name
- Flumethrin.
Brand Name
- Combination products such as the Seresto® collar.
Class of Medication
- Synthetic pyrethroid, ectoparasiticide.
Storage
- Store below 25°C/77°F and keep away from children and pets when not in use.
Why has my dog been prescribed flumethrin?
Your veterinarian has prescribed flumethrin for the treatment and prevention of flea and tick infestations. It is particularly useful for long-term protection against ectoparasites and may also reduce risks associated with certain parasite-borne diseases. It is also used to treat biting/chewing lice infestations.
How is the medication given?
Flumethrin is typically applied in the form of a slow-release collar. The active ingredients are gradually and continuously released and spread across the skin and fur. The collar should be fitted snugly around your dog’s neck without it being too tight - it should be possible to insert 2 fingers between the collar and the neck.
Are there any side effects or drug interactions?
Reported side effects are rare but can include:
- Mild skin irritation at the application site.
- Animals that are not used to wearing collars may scratch at the application site on the first few days after fitting.
- Rarely, neurological symptoms such as tremors, loss of balance and convulsions may occur.
How long will my dog need to receive this medication?
Treatment duration depends on the product, so always check the individual product details. For some collars, efficacy may last up to 8 months.
How should I dispose of this medication if I don’t use it all?
Unused collars should be disposed of following local regulations for veterinary waste. Do not allow collars or remnants to enter watercourses as they can be dangerous for aquatic life.
What if I miss a dose or give an extra dose?
If you miss a dose or a collar is lost or removed prematurely, replace it as soon as possible. Overdosing is unlikely with collars, but consult your vet if you have concerns.
My dog is unwell. Should I still give the drug?
If your dog is unwell, consult your vet before continuing or restarting treatment with any products containing flumethrin.
What should I do if this medication is accidentally given to another pet or taken by a human?
Flumethrin collars are species-specific. In cases of accidental ingestion or inappropriate use by humans or other pets, seek immediate medical advice. The product may cause skin, eye and respiratory irritation in some people in very rare cases. Pets wearing the collar should not be allowed to sleep in the same bed as their owners, especially children. Wash hands with cold water after fitting the collar.
Will my dog need to be monitored while on flumethrin?
Routine checks for flea and tick activity are recommended. If signs of infestation persist, consult your veterinarian.